Alec Baldwin has reprised in his role as Donald Trump for the latest episode of Saturday Night Live’s Weekend Update, identifying the US president as the true martyr of the tragic Charlottesville rally.

A 12-year-old singing ventriloquist has been awarded US$1 (A$1.3) million prize and her own Las Vegas show after taking the America's Got Talent crown on the season 12 finale of the NBC reality competition.

Victorian Multicultural Affairs Minister Robin Scott said if the federal government weakened 18C, the state government would move to ensure diverse communities were protected from hate speech.

More than 60 Victorian multicultural organisations have joined as one to oppose proposed changes to section 18C of the act.

They've pushing the federal government not to weaken the laws making it illegal to "offend, insult, humiliate or intimidate" based on a person's race or ethnicity.

"By weakening the intent of this legislation, it will allow a greater platform for hate speech," Victorian Multicultural Commission chair Helen Kapalos told reporters on Wednesday.

"We support any reforms that would strengthen, not weaken this legislation."

Mr Scott quoted former Liberal Multicultural Affairs Minister Matthew Guy, who in 2014 said: "There should be no changes to the federal Racial Discrimination Act and we'll be very, very clear in our submission to say so."